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  1. 行業動態

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    熱氣旁路閥在冷干機中起什么作用

    來源:杭州優聯超濾設備有限公司  日期:2017-04-21 11:17:51  點擊:3238  屬于:行業動態
    壓縮空氣在蒸發器中冷卻時,有大量凝結水析出。如果冷媒蒸發溫度過低,使蒸發器銅管表面溫度在負荷條件下低于水的冰點,則凝結水就會在蒸發器里結冰,嚴重時阻塞氣流通道,使供氣管道癱瘓。為了防止這種情況出現,必須對冷媒蒸發溫度加以控制。其簡單有效的措施就是在冷凝器和蒸發器之間加設一只熱氣旁路閥
           壓縮空氣在蒸發器中冷卻時,有大量凝結水析出。如果冷媒蒸發溫度過低,使蒸發器銅管表面溫度在負荷條件下低于水的冰點,則凝結水就會在蒸發器里結冰,嚴重時阻塞氣流通道,使供氣管道癱瘓。為了防止這種情況出現,必須對冷媒蒸發溫度加以控制。其簡單有效的措施就是在冷凝器和蒸發器之間加設一只熱氣旁路閥。熱氣旁路閥的測壓管與蒸發壓力直接連接,當蒸發壓力低到一定程序時,熱氣旁路閥開啟,冷凝器中的高溫冷媒蒸氣直接進入蒸發器,提升蒸發溫度,避免冰堵現象。
     
           Compressed air cooling in the evaporator, there are a lot of water precipitation. If the refrigerant evaporation temperature is too low, the evaporator brass surface temperature under load conditions below the freezing point of water, the water will freeze in the evaporator, serious when blocking flow channel, make the gas supply pipe. In order to prevent the problem, refrigerant evaporation temperature must be under control. Its simple and effective measure is to set up between the condenser and evaporator a hot gas bypass valve. Hot gas bypass valve works directly with evaporating pressure connection, when the evaporating pressure low to a certain application, hot gas bypass valve open, high temperature of the refrigerant vapor condenser directly into the evaporator, promote evaporation temperature, avoid ice blocking phenomenon.
     
          由于蒸發溫度降低往往是由冷干機負荷過低造成的,而冷凝器中的高壓蒸氣總是在壓縮機全負荷狀態時壓出的,所以使用熱氣旁路閥雖然能在一定范圍內防止蒸發溫度過低帶來的麻煩,但不是節能之舉。在大型冷干機中往往采用壓縮機卸荷或變頻調速等辦法來限制蒸發溫度過低。
     
            Due to the evaporation temperature decrease is often caused by a low person load, and the high pressure steam in the condenser is always in full load condition of compressor, so the use of hot gas bypass valve can prevent evaporation temperature within a certain scope the trouble too low but not energy-saving. Often used in large person compressor unloading or frequency control of motor speed and so on ways to limit evaporation temperature is too low.
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